How to reduce artifacts on curved text/vector
I added a text, converted it to a mesh and extruded it 1 upwards. To get artifacts, I used a wave modifier. Yay, artifacts:



The artifact are because of the terrible topology Blender creates of the font. Usually, if the topology is too horrible for manual fixing, add a Remesh modifier and hope the best:



The Remesh modifier needs to be before the artifact-creating deformation. If you have to many vertices at the end, adding a Decimate modifier in Collapse mode works well.